The premiere of the “The Hangover Part II” took place in Los Angeles Premiere. Bradley Cooper, Ed Helms, Zach Galifianakis, and Justin Bartha star in the film. Jeffrey Tambor, Ken Jeong and Mike Tyson also rejoin the cast. According to the movie’s description, in ‘The Hangover Part II,’ the fellas travel to exotic Thailand for Stu’s wedding. After the unforgettable bachelor party in Las Vegas, Stu is taking no chances and has opted for a safe, subdued pre-wedding brunch. Obviously, that doesn’t happen. The film hits theaters May 26th.